Signal Amplification in NbN Superconducting Resonators via Stochastic Resonance
arXiv:cond-mat/0606555 · doi:10.1016/j.physleta.2007.05.103
Abstract
We exploit nonlinearity in NbN superconducting stripline resonators, which is originated by local thermal instability, for studying stochastic resonance. As the resonators are driven into instability, small amplitude modulated (AM) microwave signals are amplified with the aid of injected white noise. The dependence of the signal amplification on the modulation amplitude and the modulation frequency is examined and compared with theory.
4 pages, 6 figures
References in corpus (4)
- Coherent Signal Amplification in Bistable Nanomechanical Oscillators by Stochastic Resonance
- Fluctuation-enhanced frequency mixing in a nonlinear micromechanical oscillator
- Observation of Bifurcations and Hysteresis in Nonlinear NbN Superconducting Microwave Resonators
- Escape rate of metastable states in a driven NbN superconducting microwave resonator